Feature request: Authentication Debug event

[Shailevy]

Thie really is a great library and I'm using plenty of it's it's features. I'm also using it for Phone Authentication and I love the "Black Box" approach that saves plenty of implementation details. However, when facing a problem in "Production" it's almost impossible to figure out the error. For example, I would like to manually send caught exceptions or login error to Crashlytics

Another example is that some users are not receiving the SMS OTP , for most 99%the users its works fine. It's really hard to figure out if the problem was a user input problem or other problems. Approaching the firebase support I would like to provide the problematic phone numbers as they we submitted and etc.

But without the ability to physically connect the device and get a Logcat it's impossible to figure out the issue before approaching the support.

I think such a feature can really save time for users of the library